Some channels yes, and others no.  Each marketplace has its own rules and policies.  eBay is the most seller friendly marketplace allowing you to customise your storefront with banners, video, featured products and custom store categories, and your listing can also have a custom design template applied.  We’ll show you how during training as part of an eBay marketplace integration with ZELLIS Connect.  Most other marketplaces don’t permit design or functional coding to be applied, so you will be limited to product images and descriptions in plain text or simple HTML only.